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Finding the Fourth Proportional to 216,506.76, 298,793.34 and 121,017.48

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Solution

The fourth proportional to 216,506.76, 298,793.34 and 121,017.48 is: 167,011.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,506.76 : 298,793.34 = 121,017.48 : x
  2. Step 2: Convert to fraction form
    216,506.76/298,793.34 = 121,017.48/x
  3. Step 3: Cross multiply
    216,506.76x = 298,793.34 × 121,017.48
  4. Step 4: Simplify right side
    216,506.76x = 36,159,217,047.58
  5. Step 5: Solve for x
    x = 36,159,217,047.58/216,506.76
  6. Step 6: Final answer
    x = 167,011.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.